/* 呼吸灯动画 */
@keyframes breathing {
    0% {
        box-shadow: 0 0 0 0 rgba(40, 167, 224, 0.3);
    }

    50% {
        box-shadow: 0 0 10px 5px rgba(40, 167, 224, 0.3);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(40, 167, 224, 0.3);
    }
}

.todo-header {
    padding: 15px;
}

.todo-header input {
    width: 100%;
    padding: 15px 0;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
    animation: breathing 3s infinite;
}

.todo-header input:focus {
    outline: none;
    border-color: #28a7e0;
    animation: none;
    box-shadow: 0 0 15px rgba(40, 167, 224, 0.3);
}

.todo-header {
    padding: 15px;
    background: var(--header-bg);
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(144, 202, 249, 0.2);
}

/* 调整输入框颜色 */
.todo-header input {
    border-color: var(--input-border);
    background: rgba(255, 255, 255, 0.9);
}

.todo-header {
    transition: background 0.4s ease-in-out;
}